What is the meaning of Grauen?

to cause terror [with dative ‘in someone’ and vor (+ dative) ‘because of something’]

to be terrified [with vor (+ dative) ‘of something’]

to break, to dawn

to dusk

to become grey

inflection of grau:

1. strong genitive masculine/neuter singular
2. weak/mixed genitive/dative all-gender singular
3. strong/weak/mixed accusative masculine singular
4. strong dative plural
5. weak/mixed all-case plural

strong genitive masculine/neuter singular

weak/mixed genitive/dative all-gender singular

strong/weak/mixed accusative masculine singular

strong dative plural

weak/mixed all-case plural

Source: wiktionary.org